---

yaml
---
r: 130471
b: refs/heads/master
c: da505c3
h: refs/heads/master
i:
  130469: 54059b0
  130467: b928c99
  130463: bcd2f0e
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: f818dd55c4a8b3519e203900bde0bb780d36e799
+refs/heads/master: da505c386c9f993e43861791dae339b2219cf8dd

trunk/fs/cifs/connect.c

@@ -1802,7 +1802,7 @@ ipv4_connect(struct TCP_Server_Info *server)
 	 *  user space buffer
 	 */
 	socket->sk->sk_rcvtimeo = 7 * HZ;
-	socket->sk->sk_sndtimeo = 3 * HZ;
+	socket->sk->sk_sndtimeo = 5 * HZ;
 
 	/* make the bufsizes depend on wsize/rsize and max requests */
 	if (server->noautotune) {
@@ -1953,7 +1953,7 @@ ipv6_connect(struct TCP_Server_Info *server)
 	 * user space buffer
 	 */
 	socket->sk->sk_rcvtimeo = 7 * HZ;
-	socket->sk->sk_sndtimeo = 3 * HZ;
+	socket->sk->sk_sndtimeo = 5 * HZ;
 	server->ssocket = socket;
 
 	return rc;

trunk/fs/cifs/transport.c

@@ -199,7 +199,25 @@ smb_sendv(struct TCP_Server_Info *server, struct kvec *iov, int n_vec)
 				    n_vec - first_vec, total_len);
 		if ((rc == -ENOSPC) || (rc == -EAGAIN)) {
 			i++;
-			if (i >= 14) {
+			/* if blocking send we try 3 times, since each can block
+			   for 5 seconds. For nonblocking  we have to try more
+			   but wait increasing amounts of time allowing time for
+			   socket to clear.  The overall time we wait in either
+			   case to send on the socket is about 15 seconds.
+			   Similarly we wait for 15 seconds for
+			   a response from the server in SendReceive[2]
+			   for the server to send a response back for
+			   most types of requests (except SMB Write
+			   past end of file which can be slow, and
+			   blocking lock operations). NFS waits slightly longer
+			   than CIFS, but this can make it take longer for
+			   nonresponsive servers to be detected and 15 seconds
+			   is more than enough time for modern networks to
+			   send a packet.  In most cases if we fail to send
+			   after the retries we will kill the socket and
+			   reconnect which may clear the network problem.
+			*/
+			if ((i >= 14) || (!server->noblocksnd && (i > 2))) {
 				cERROR(1,
 				   ("sends on sock %p stuck for 15 seconds",
 				    ssocket));